Can you pass this Science quiz?
Science
2.35 M People
Took This Quiz
Erin reads an average of 20 books per year. She read 23, 17, 20, and 19 books in four different years. How many books did Erin read in the 5th year to make it an average of exactly 20.0 per year?
17 20 21 19
Hot Quizzes Trending Now
Science
1.26 M  Players
An electric motor makes 3,000 revolutions per 1 minute. How many degrees does it rotate in 1 second?